Road roller



(Oct. 9;, i923.

A. w. AsTlKl-:N

ROAD ROLLER Filed July 5, 1922 fio a 7 or rr i 1 in il. t

FFICE.

,rarer ANDREW 11V. AITKEN, OF SPRINGFELD, CJHEO, ASSIGIYOR TO THE BUFFALO-SPRING- FIELD ROLLER CMPNY, OE SERNGFIELD, OH, A CORPORATION OF OHIO.

ROAD ROLLER.

Application led July 3, 1922.k Serial No. 572,401.

gether to 'term a proper crest on narrowV roads. This arrangement necessarily limits the distance between the side frame menibers ot the machine with a consequent' limited space to accommodate certain of the workingpari's such as the change of speed gears. thas been common practice to locate the shi'itahle gears ot the change ot speed mechanism upon a `counter-shatt 'which is supported'by the side `trame members, and due to the heavy construction ot the lparte it has been necessary to extend the bearings tor this shaft a considerable dis tance on the inside oi the sideA Atrame members. Because of these conditions it has been `found impossible to accommodate more thantwo shiftable change ot speed gearing' upon this counter-shaft because oi the tact that the gears were located directly upon the Shaft between the bearings. lt is desirable, however, in machines of this kind to have more than two changes ot speed, three being a desirable number.

rl`he object ot this invention is to devise a nove] arrangement whereby suiiicient bearing space is provided between the 'trame members to accommodate at least one addi tional shi'ftable gear whereby three changes of speed may be secured.

ik further object of the invention is to provide improved means 'for locking the shift ing devices for the shittable gears ot the change oil speed transmission.

1n the accompanying drawings:

lig. 1 is a transverse section of 'so much oit a road roller as is necessary to illustrate the improvements.

Fig. 2 is a section on the line 2-2 of Fig. 1.

Fig. 3 is a section on the line 3-3 ot Fig. 1.

Referring` to the drawings, 1 and 2 rep# resent the side frame members shown as constructed of steel plates. A shaft mounted in bearings i in the side trame members and contains three gea-rs 5, 6 and T. This shaft also has at the respective ends thereoi ears S and 9 by which motion may be imparted to theshait in either direction from any well known power 'mechanism The gears 5, and i' form part ol the change oi' speed mechanism and are the driving gears of that mechanism. The shiftable gears are indicated at 10, 11 and 12 and are located upon the counter-shaft 13 carried by the bearings 'leiand 15 secured to the side frame members which bearings it will be noticed extend iter a considerable distance on the inside 'of the trame members. The counter-shaft has a pinion 16 meshing with a gear 17 which is securedf'in any suitable manner to the hub 18 oi one of the ground wheels, the rim of which is represented by 19. rlhe shittable gears 10, 1l and 12, in the present case, however, instead of being mounted directly uponY the counter-shaft 13 are keyed to a. cylindrical sleeve member 20 which in turn is keyed to the counter-shaift 13 so as to be rotatabletherewith. This sleeve member has each of its ends'itormed with an enlarged bore to accommodate the bearings 1a and 15, as indicated at 20', the ends of the sleeve extending to points in comparatively close proximity to the side trame members, so that the gears may be shifted to points extending substantially the full width `of the distance between the said trame members instead of the distance between the ends o'll the bearings 14 and 15, as

would be the case it the ,Gears were mounted i directly upon the counter-shaft in the Ausual way. This arrangement it will be readily seen enables me to nicely accommodate least three shiftable gears and at the same time restrict the distance between the frame members to the necessary limit explained.

For the purpose ot shitting the gears 10,

11 and 12, which are all connected together by means of which the shifting may be accomplished. In order to lock the gears ifi shifted position there is provided a plate 28 formed with a series of notches 29 which cooperate with a Web 3Uprojecting,` Yfrom the sleeve Q3 (see Fig. 2). The plate is carried by one end ot'a lever 3l pivotcd on a pin 82 carried by a bracket 33, the other' end' of the lever having a foot pedal 34C. VBy de- Y,

pressing'the foot pedal the plate 28 is elevatedvto disengage same from the projection 30 whereupon the gears may be readily shifted to desired position, and again locked in that position by releasing the lever 3l.

Having thus described my invention, I claim:

l.V In a machine of thecharaeter described,

2. Ina machine of the character. lescribed, side frame membersybearings. carried` by said `frame members, said bearing being eX- tended inwardlyvlbeyond the inner Yfaces Yof said frame members, Y a shaft mounted in said bearings, a sleeve connected to 'said shaft, said sleeve having` beenextended over v said bearings, anda plurality of shiitable `gears mounted on `said sleeve and splined thereto, said gears forming part of change of speed mechanism.

3. In a machine of the character described,

`a plurality of shift-able gears forming parti., of achange of speed mechanism, a shiftable projected over iff/asis Yyoke forsaid wears, a pivoted lever, a member on said "ever having a plurality of notches, and a projection on saidyolre to cooperate with said notches to hold said yoke in different positions of adjustment.

4a In a machine of the character described, a plurality of shiiftahle gears, forming part of a change of speed mechanism, a shittable yoke for said gears, a slidable sleeve counected With said yoke, a rack on said sleeve, a ,pinion meshing' withsaid rack to slide said sleeve, a lever, anotched platc'carricdvby said levvervand a projection associated with said sleeve and yoke to cooperate .vithsaid notches. f l

5; In a machine'of the character described, side frame members, bearings carried by said frame members, one at least ot'said bearings ,being extended inwardly beyond the inside `face oi' its corresponding frame member, a shaft mounted in said bearings, said shaft havinga cylindrical mounting for shittable gears which form a part ot' change olf speed mechanism, said mountingbeinp; said inwardly projecting bearing. f y

6.k In a machine ol' the character described, side frame members, bearings carried by said frame members, one atleast of said bearings being extended inwardly beyond theinside face of its corresponding `frame member, a shaft mounted in said bearings, a sleeve mounted on said shaft and rotatable therewith, said sleeve being projected over ANDREW W. AITKENQ 

